LTS-8 Ntau Lub Teeb Tso Tawm
| Taw qhia | |
| 1 | Helium neon nitrogen peb hom ntau pab pawg tawm teeb lub teeb, tsim rau University Laboratory |
| 2 | Nws spectrum yuav siv tau raws li tus qauv wavelength rau wavelength calibration |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
